This game has recently been updated. The new version has updated a lot of things, one of which is cf expert and grandmaster ranking details. Below, the editor of Sourcecode.com will take you to see the details of CF expert and grandmaster rankings.
Answer: Double row is not possible, but 5 row is possible.
1. The ranking order from low to high is Rookie, Elite, Expert, Master, Grandmaster, Legend, Gun King, Glory Gun King, and King of Gun Kings.
2. Grandmaster 5 and Master 4 can be ranked, so Expert and Master belong to adjacent ranks, so they can be ranked directly.
3. CrossFire can flexibly organize groups of 1 to 5 people, and you can freely invite each other.
4. However, the difference between the highest rank and the lowest rank player in the team is at most 4 ranks.
5. Therefore, Master 1 can invite Expert 1 to the rank of Grandmaster 1 for a ranking match, as long as both parties remain within 6 ranks.