Reset user's password LDAP Sync

Hi there

We are using LDAP Sync plugin to synchronize users in a DEV environment. The plugin creates ~60 users and assigns them a random password (as I read in the community). Is there any way to set the user's password to one unique password for all? 
We found one way to manually reseting the password, but we have to do it one by one...
We are using 7.10 Appian version (we plan to update to the last version asap).

Many thanks in advance.

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