A good practice is to always update your "Status" in Teams so others can see you availability.
When you have a larger number of staff using Teams it is sometimes a bit frustrating trying to work out who is available to chat or call. This has become more pronounced with everyone working remotely.
A simple solution is to create "Groups" under "Calls".
For example you may have Groups named Management, Administration, Sales, Engineering, Production, etc.
If you populate each Group with the appropriate team members you will then have a visual overview of all the team showing their status.