Automatic alerts when there has been no meeting for an account

Perhaps you should articulate requirements more clearly 

E.g. as a KAM I has to have at least one meeting registered (in terms of DateEntered and AssignedTo?) on (which StartDate?) in status (which status? held or planned? or whatever?) related to (Account ? or any Contact/Case/ect related to account?) in X days, where X is calculated from what starting point and for which entity? for the very each Account?

From solution perspective, clarifying that may allow to calculate  the number of meetings that fall into the criteria for each Account regularly (daily?), and then escalate the Accounts with zero number of such meetings to KAMs - at the time of criteria control

Sorry! Let me try to explain

So each KAM is responsible for several accounts with different relationships and relation status. Depending on status the KAM has a target to meet the account 1-6 times a year (meeting registered) 

What I would like to do is to set a rule where each KAM receives an alert or an email saying that we need to schedule a meeting for these clients within this month OR an email/alert saying that these accounts are overdue. (no meeting has been registered within the target)

Also, if i may, targets in the number of meetings do not help in meeting finance targets, cause for some unexperienced it takes 10 meetings to reach the finance target of developing customer, while other talents can make it with one meeting - motivation on meetings number KPI barely works and statistics shows performance which often does not correlate to outcomes. We'd  suggest relying on agreements concluded  with customer (so called covenants) and  helping customers to fulfill those covenants and create new one with KAMs efforts and estimate  KAM efficiency from there, rather then calculating the number of sometimes useless actions in KPI

Also, if i may, targets in the number of meetings do not help in meeting finance targets, cause for some unexperienced it takes 10 meetings to reach the finance target of developing customer, while other talents can make it with one meeting - motivation on meetings number KPI barely works and statistics shows performance which often does not correlate to outcomes. We'd  suggest relying on agreements concluded  with customer (so called covenants) and  helping customers to fulfill those covenants and create new one with KAMs efforts and estimate  KAM efficiency from there, rather then calculating the number of sometimes useless actions in KPI