autovacuum_work_mem and maintenance_work_mem

for default autovacuum_work_mem used the amount of memory RAM from
maintenance_work_mem but what will happen if decide to increase the amount
of memory RAM on autovacuum_work_mem for instance on 2GB ,
maintenance_work_mem has 1GB memory RAM and my server has 16GB memory RAM,
I ask if it's good idea that autovacuum_work_mem will use memory RAM
independent to maintenance_work_me.

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Ing. Henry G. Cortez