Feature Request for ability to add "Location" field to Add Time dialog

We plan to use time tracking for field personnel (consultants) as well. For billing purposes, we need to know whether the time was spent on customers' site site (we have customers with multiple sites), or in our office.

We do not want to create separate DevOps tasks for every possible location. Instead we would like to introduce a field "Location" to the "Add Time" dialogue where we enter time (with a possibility to update it in time explorer). "Location" will become a list of 50 to 100 cities, therefore a way to search/filter and pick from this list would be great.

Because of the need to manage up to 100 locations, use of category, with a lack of filtering is not very beneficial. As we plan to use budgets already for budget tracking, we would prefer not to use it for location handling (in addition there is no filtering for budgets either).