Multiple Linear Dimension - Annotate tab

After you placed a linear, aligned, angular dimension, you might want to take this dimension as a reference to create more dimension

Continue Dimension

Annotate tab > Dimension panel > Continue

If the new dimension not continue from the dimension you want, press [Enter] to select which to continue

Baseline Dimension

All the other dimension start from the same dimension

Quick Dimension

Placed all dimensions along one edge, it can be linear, aligned, angular, continue or baseline dimension

Annotate tab > Dimension panel > Quick Dimension

Select all the vertical lines, then position it
This dimension only can dimensioning in one direction at the same time