No! The Start Date provides an option to bring forward account balances from a previous accounting system. Your asset acquired after the start date should be created first; its purchase cost will show as zero. Then Spend Money and allocate the expenditure to the new asset.
You do not do this by journal entry. Instead go to Fixed Assets, click on the Accumulated Depreciation balance for the asset involved, and click the New Depreciation Entry. Enter the month’s depreciation as a positive number. Manager will allocate this to the contra-asset account for the asset.
Not at the present time. I think that capability will be available when custom control accounts become available. However, you can create a custom field and have it show in the display. This field can even be a dropdown. Then, you could sort the display by that custom field by clicking on its heading. You can also search by the asset category title. With very little effort, you can obtain the information your accountant demands. (And remember, the accountant works for you, not the other way around. )
Correct, if there are transactions affecting that account. If there are no transactions, the Fixed Assets tab can be disabled under Customize. Many control accounts are like this, appearing when the relevant tab is enabled.
As you learn how to handle fixed assets, I suggest checking the Summary, Fixed Asset Summary report, and Fixed Assets ledger after every transaction. See what happens and how the reports change and I believe you will quickly understand how it all works. You may want to create a test company for these experiments.