The way I handle this is to place all files for a specific album in the same folder and then click the radio button for grouping by folder. boroda74 gave the location above. You can also try to tweak the rules by which MB specifies what is in the same album. I recommend the folder option, less likely you'll have issues if your tracks are not tagged completely uniformly.
Home Desk ~ MB 3.3 Portable • Questyle CMA400i (ASIO) • Sennheiser HD 660S (balanced) / Audeze EL-8 Closed Back / Fostex TR-X00 Ebony • Teac AI-101DA • Jamo C93 + Dayton Audio SUB-1000
Work Desk ~ MB 3.3 Portable / Tidal • SMSL SU-8 v2 • Nobsound NS-05P • THX AAA 789 • Sennheiser HD 58X (balanced)
OTG ~ FiiO M11 • Audiofly AF180 / B&O H6