Canonical page: https://tellenze.com/focus-sandbox FOCUS SANDBOX · FREE SOLO TOOL # A week with room to breathe. Make space for the work that matters. Sketch a range, reserve some room, and try a different week before you commit. Monday to Friday. No dates. No promises. ## Your focus week An undated sketch. You choose what goes where. All times use 15-minute steps. h means hours; m means minutes. ### Start in three steps - Set your time. Open “Edit baseline room” for each day. Choose available time and a buffer. - Add your work. Give each item a name, then choose a likely and cautious time estimate. - Plan and compare. Drag work onto a day, or choose a day in its form. Keep work in Parked if it is not ready. Try What-if to see how a different amount of time changes the plan. Start with a few candidates. Estimate a range, then choose a day or leave work parked. Week scenario Baseline What-if BASELINE REVIEWNothing placed yet Check each day, not just the weekly total. Free time on another day does not cancel a shortage. Planning room15h Ranges to check0 Parked0 Try a different amount of room+0m available · 0m extra buffer / day Daily what-if changesAvailable time change, each day+0mExtra buffer, each day0m What-if changes apply to every day. Available time stays between 0m and 12h. Extra buffer can exceed it; that excess is shown explicitly. Work stays on the day you chose. Same work, same placements. Baseline room 15hWhat-if room 15h Reserved bufferKnown likely workExtra cautious timeRoom leftAvailable limit Drag work between days and Parked using its grip. On a phone, hold the grip briefly. You can also choose a Day in each work form. Moving work changes its day in both views. Keyboard controls Focus the grip and press Space or Enter. Right or Down chooses the next day; Left or Up chooses the previous day. Parked comes after Friday. Press Space or Enter again to place the work. Escape cancels. 01 ### Monday 0 Open day Available4h Buffer1h Planning room3h Known likely0m Known cautious0m Drop work here, or choose this day in its form. Edit baseline room Monday baseline capacityAvailable0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h4h 15m4h 30m4h 45m5h5h 15m5h 30m5h 45m6h6h 15m6h 30m6h 45m7h7h 15m7h 30m7h 45m8h8h 15m8h 30m8h 45m9h9h 15m9h 30m9h 45m10h10h 15m10h 30m10h 45m11h11h 15m11h 30m11h 45m12hReserved buffer0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h These controls edit the original week. The what-if view adds its daily changes. 02 ### Tuesday 0 Open day Available4h Buffer1h Planning room3h Known likely0m Known cautious0m Drop work here, or choose this day in its form. Edit baseline room Tuesday baseline capacityAvailable0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h4h 15m4h 30m4h 45m5h5h 15m5h 30m5h 45m6h6h 15m6h 30m6h 45m7h7h 15m7h 30m7h 45m8h8h 15m8h 30m8h 45m9h9h 15m9h 30m9h 45m10h10h 15m10h 30m10h 45m11h11h 15m11h 30m11h 45m12hReserved buffer0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h These controls edit the original week. The what-if view adds its daily changes. 03 ### Wednesday 0 Open day Available4h Buffer1h Planning room3h Known likely0m Known cautious0m Drop work here, or choose this day in its form. Edit baseline room Wednesday baseline capacityAvailable0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h4h 15m4h 30m4h 45m5h5h 15m5h 30m5h 45m6h6h 15m6h 30m6h 45m7h7h 15m7h 30m7h 45m8h8h 15m8h 30m8h 45m9h9h 15m9h 30m9h 45m10h10h 15m10h 30m10h 45m11h11h 15m11h 30m11h 45m12hReserved buffer0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h These controls edit the original week. The what-if view adds its daily changes. 04 ### Thursday 0 Open day Available4h Buffer1h Planning room3h Known likely0m Known cautious0m Drop work here, or choose this day in its form. Edit baseline room Thursday baseline capacityAvailable0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h4h 15m4h 30m4h 45m5h5h 15m5h 30m5h 45m6h6h 15m6h 30m6h 45m7h7h 15m7h 30m7h 45m8h8h 15m8h 30m8h 45m9h9h 15m9h 30m9h 45m10h10h 15m10h 30m10h 45m11h11h 15m11h 30m11h 45m12hReserved buffer0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h These controls edit the original week. The what-if view adds its daily changes. 05 ### Friday 0 Open day Available4h Buffer1h Planning room3h Known likely0m Known cautious0m Drop work here, or choose this day in its form. Edit baseline room Friday baseline capacityAvailable0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h4h 15m4h 30m4h 45m5h5h 15m5h 30m5h 45m6h6h 15m6h 30m6h 45m7h7h 15m7h 30m7h 45m8h8h 15m8h 30m8h 45m9h9h 15m9h 30m9h 45m10h10h 15m10h 30m10h 45m11h11h 15m11h 30m11h 45m12hReserved buffer0m15m30m45m1h1h 15m1h 30m1h 45m2h2h 15m2h 30m2h 45m3h3h 15m3h 30m3h 45m4h These controls edit the original week. The what-if view adds its daily changes. ### Parked0 Outside the week’s time totals. Keep work here until you choose a day. Drop it back here if you want to wait. Nothing parked. CANDIDATE WORK · 0 / 20 ## Choose what gets your attention. A candidate is a piece of work you may do this week. Estimate its likely and cautious effort, then choose a day or keep it parked. Nothing is scheduled for you. ### A few candidates are enough to start. Add your first piece of work, or load the clearly labelled example week. ## Keep a copy of the thinking. Exports include both scenarios, every candidate and note, unknown ranges and the model’s limits. Local saving starts after your first edit. Enable JavaScript to edit the focus week. You can still read Quick start, Terms explained and the privacy guidance. Terms explained Available timeTime you can spend on this work each day. Leave out meetings, breaks and other work. BufferTime you keep free for interruptions, delays or unexpected work. Planning roomAvailable time minus buffer. For example, 4h available and 1h buffer leaves 3h for work. It cannot fall below 0. Likely effortYour best estimate of how long the work will take if it goes as you expect. Cautious effortA longer estimate in case the work takes more time. It must be the same as, or higher than, your likely estimate. It is not a guarantee. Ranges to checkOne or both estimates need attention. The work still needs time, so the tool cannot confirm that it fits. ParkedWork you have not put on a day yet. It stays in your plan, but is left out of the day and week time totals. BaselineThe original day limits you set. What-if changes keep these limits unchanged. What-ifTry more or less available time, or extra buffer, on every day. Both views use the same work and days. Moving work changes its day in both views. Known totalsKnown likely adds the likely estimates you have entered. Known cautious adds cautious estimates only when both estimates are complete and in the right order. Missing time is left out of these totals; it does not mean the work takes no time. Day statusOver capacity means likely work or the buffer goes beyond the day’s limit. May need more time means the longer estimate goes beyond it. Check estimates means some estimates need attention. Within day limits means the supplied estimates fit; it does not promise that the work will finish. ROOM IS A CHOICE ## A sketch, before a commitment. This is a planning aid, not a delivery forecast. Use it to see what you are assuming, then decide what deserves a place in your week. - Available time is the part of each day you choose to model, not a full workday or calendar connection. Reserve buffer for interruptions or uncertainty. - Planning room is available time minus buffer, with a minimum of zero. If you reduce a day’s available time, its original buffer is lowered to fit. The tool tells you what changed. - Known likely totals add the likely estimates you enter. Known cautious totals include only work with both estimates in the right order. Missing or reversed estimates mean the tool cannot confirm that all work fits. - Work stays on its chosen day. It is not split, ranked, moved or committed automatically. Parked work is outside the time totals. - Read each day separately. Friday’s spare time does not make an overloaded Monday fit. A cautious estimate is an assumption, not a probability or guarantee. ## Your week stays with you. No account or uploads. Names, notes, estimates and placements are stored only in this browser after an edit. Nothing connects to a real calendar or workspace. You choose when to copy or download an export.