In AJ Matrix DNA , you can have any unlimited number of Level width and height. No, you cannot promote the user from one level to another. A downline is defined as all the Users emanating from one particular User.
Example:
if User A enter the business through a distributor named User B, Then User A will be in User b's downline. If User A bring someone named User C ,then User C will be in downline of both the user A and User B. In simple terms, an upline is defined as the line of sponsors above the distributor and between the distributor and the company. You can see your upline and downline details in your “My Account” Area of the user side. No, as a user you cannot suspend your downline You can continue your TREE , It wont affect your referral. According to the settings done by the admin in Members settings, referrer will get commission either “After Signup” or “After Upgrade” of the referred member.
After Signup :The user gets the referral commission immediately after registration of that referred member.
After Upgrade : The user will get the referral commission only after the referred member has upgrades his account. | 
