need to know how many tax returns can I do on my account

Up to to 20 on one account, 8 paid, 12 Free.

When I do that it asks what type of return. If I choose "Standard" which costs money, is that going to open a new account (and mean being charged again) or include it with my other return? I do't want to be billed four times for four family members.

You need to pay for each Standard return. All will be on the same account.

When I click on Account Manager, it won't let me click on a different return. Any suggestions?