Pattern Increases?

I am not sure where ,exactly I increase when pattern says work 6 rows inc 1 st at front edge in 3rd row at same time inc 1 st at front edge in next and every foll alt row. I need to have 4 increases. Do I increase at beginning of 3rd row and at end of 3rd row and then increase at beginning of row 4 and then at beginning of row 6. Thank u! Cindy

Hi Cindy and welcome!
Is that exactly the wording in the pattern? All the increases are at the front edge? Usually the “at the same time” increases involve a front edge and maybe an armhole edge.
So it might be increase one stitch at the front edge on row 3 and at the same time increase at the armhole on row 1 (i.e. the next row) and rows 3 and 5. That would give you 4 increases.
Can you tell us the name of the pattern or give us a link?