Office management - after easing from german government

StephanGee 

Power App indeed is cool and powerful and you could create something nice and cool with few coding.

You may also take a look at Microsoft Booking:

https://www.microsoft.com/en-us/microsoft-365/business/scheduling-and-booking-app 

Depending on your use case, you may create booking scenario in this app.

However, I recommend create form using Microsoft Forms and ask everyone fill us the form like why they want to go for work and their duty and create table for them. Since we are still fighting with COVID-19 it is better to stay at home as much as possible.

From response you could review and decide if user could work remotely or not.

You may also use Microsoft Planner where you define tasks and in there specify whether task need to be done in work or it could be done in home.