Spread Values When Criteria Met

I have worksheet where I would like to apply a number value proportionately throughout a column bases on user-defined conditions (i.e. >=, <=, Between) from other colunmns. See example below and attached worksheet with further detail.

Col A Col B Col G Col L Col M
01380Employee 15.0 5.5 (0.8)
00304Employee 24.0 - (0.8)
01901Employee 33.8 (1.0) (0.8)
01729Employee 43.0 - (0.8)
01482Employee 53.0 (1.1) (0.8)
00299Employee 62.5 - -
00069Employee 72.5 0.5 -
01783Employee 81.5 - -
02076Employee 91.0 - -
01934Employee 100.5 - -
TOTAL 4.0 -4.0

In the above example, I would like to have the TOTAL value of Column L (4.0) be inversely spread throughout column M based on criteria selected by a user in a section of the spreadsheet.

Criteria:

Column G >= 3 AND all values in Column L = 0; Spread -4.0 (Inverse of cell L12 = 4) in column M for records that match criteria.

I would like to have a command button apply the logic of the conditional criteria set for Columns G & L and spread proportionately ithe value from n Column M.

I added examples of the different criteria and the layout in the file attached.