You can use the {compressor} constant (freearc constant, not inno constant) to fit multiple tools with the same packcmd into one command:
Code:
[External compressor:oodlereck, oodlrecm, oodlerecs]
header = 0
packcmd = {compressor} e <stdin> <stdout>
unpackcmd = {compressor} d <stdin> <stdout>
Precompress the game using the Oodle core dll that the game comes with. Only some games require a different core to the one that ships (like Sekiro). Same dll used for precomp is also needed for decomp.