What is the meaning of 做一个梳理
梳理 has two basic ideas:
Oxford

VERB
1
TEXTILES
card
将羊毛梳理成毛线
card wool into thread



2 整理 comb
梳理思路
organize one's ideas

In line with the second meaning of comb -or- organize:
KEY

2 {figurative} organize, analyze (data, etc.)

I think organization fits pretty well for your sentence here, especially because later in the sentence it mentions 流程 and 选址.
So basically we have 做一个梳理 = Do some organization