Plant Maintenance functionality with SAP B1
We are having one requirement where we want to implement Plant maintenance functionality with SAP B1 ( just like ECC or somewhere nearby).
I went through some documents and found that maintenance module is not a part of SAP B1.
Could you please give me some insights on
1) possibilities of implementing PM functionality with SAP B1
2) is there any third party add-on available for this.
3) can we do custom application development ( Z development just like what we do in SAP ECC)?
Kindly request you to provide more information on this part.