"Automatic Symbol Generation
When editing an ASCII netlist that contains subcircuit definitions, you place the cursor on the line containing the name of the subcircuit, right click, and execute context menu item "Create Symbol." For most users, this is the only method you should ever consider for adding third-party models defined as subcircuits since all the details are handled for you."
Upon running
View attachment 144380
also
View attachment 144382
Located in AD620.asy was
SYMATTR ModelFile C:\Users\rmaxh\AppData\Local\LTspice\lib\sub\ad620.cir
which resulted in error above shown below
XU1 N001 0 N003 N004 out 0 N002 N005 AD620
V1 0 N004 12
V2 N003 0 12
V3 N001 0 SINE(0 10m 1k)
RG N002 N005 49.4k
R2 out 0 10k
.tran 0 10m 30u 100u
* G-1
* RG =
* 49.4k
.lib C:\Users\rmaxh\AppData\Local\LTspice\lib\sub\ad620.cir
.backanno
.end