Although it’s not as seamless as having everyone under one account, team members can come from any Priority Matrix account. The main benefit of having one main account is that you can create and send custom templates across team members. If you’re on different accounts, you can’t do that.
If you don’t specifically need to use templates, a good workaround is to create a matrix with the headings you want all projects to have and invite one another. This way, everyone will see what kind of “template” to use, even if it’s not officially a custom template.
If you do specifically need custom templates, let us know and we can recommend the right kind of license to get so that there are enough seats at your table to include everyone you want on the team!