The Highlanders moved into eighth spot following a 29-17 win over the Reds last weekend. They return to Dunedin on Friday for the first time in almost a month while the Force are making their first trip there since 2016.
Brown is aware of the importance of the last few rounds as the Highlanders look to remain in the playoff picture.
"At least our destiny is in our own hands now and if we can keep winning - we make the playoffs, which of course is easier said than done. We must continue to grow as a team and improve each week if we are to be contenders in this competition. There are a number of teams playing good rugby at the moment and we know we haven't put a complete performance out on the park yet."
The forwards have a familiar look to them this week with just the return of Andrew Makalio for the injured Liam Coltman as the only change.
In the backs, after good early season form Josh Timu has returned from injury to make the starting team at the more familiar position of centre pushing the hard running Fetuli Paea out to the wing.
On the bench young lock Fabian Holland, is set for his second appearance and winger Liam Coombes-Fabling returns from injury.
Highlanders side to face the Force
1 Ethan de Groot
2 Andrew Makalio
3 Jermaine Ainsley
4 Bryn Evans
5 Josh Dickson
6 James Lentjes (CC)
7 Billy Harmon
8 Marino Mikaele-Tu'u
9 Aaron Smith (CC)
10 Sam Gilbert
11 Scott Gregory
12 Thomas Umaga-Jensen
13 Josh Timu
14 Fetuli Paea
15 Connor Garden-Bachop
Reserves
16 Rhys Marshall
17 Daniel Lienert-Brown
18 Saula Mau
19 Fabian Holland
20 Hugh Renton
21 Folau Fakatava
22 Mitch Hunt
23 Liam Coombes-Fabling