How to remove passenger inside panel door

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The passenger door window fell down, cant roll up (electric windows). Need to know how to remove inside panel on front passenger door to put window back on track. This is my Dad’s vehicle: 1991 Dodge Grand Caravan, he is 87 yrs. old. I am trying to fix to save him money. I only found two screws in door, one on inside door pull, other up top towards review mirror. I popped all the panel out, but something still has hold around where the speaker is. When I popped off the cover to speaker, did not find any screws to remove that holds panel on. Can anyone explain how to finish removing panel? Once I get panel off, I can fix rest and reassemble for my dad so he can lock his van again. Thanks!