Hello @Ronda Landis
Thanks for posting in Q & A forum.
You can only be signed in with one Microsoft account at a time, but you can have multiple accounts (such as other family members or your work account) on your computer.
Having different accounts on a shared PC lets multiple people use the same device, all while giving everyone their own sign-in info, plus access to their own files, browser favorites, and desktop settings.
refer- learn
If the Answer is helpful, please click Accept Answer & UPVOTE, this can be beneficial to other community members.