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Edit->Edit Preferences->Sorting/Grouping, then under sorting click [...] next to one of the 8 slots
In the first field of the next box, Select artist at the left, then descending at the right
In the second field of that box, select title at the left, then descending at the right
Click Save on both
Then, in Tracks view, Click the word "Tracks" and on the drop-down that comes down go to Sort by and then choose what you just made as the option.
You should do some reading here:
https://musicbee.fandom.com/wiki/MusicBee_WikiYou can also accomplish this by clicking the Artist header until it's sorted the way you want it and then ctrl+clicking the Title header until it's sorted the way you want it, but the above steps make it a selectable option.