PSPICE-FOR-TI: Run as local user (not admin)

Part Number: PSPICE-FOR-TI

Tool/software:

Hi,

my customer has an issue:

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Could you help me how to install the Pspice TI tool as an admin and use it as a local user? 
If I install it as an admin, then I have to run it as an admin otherwise licensing fails.
I see no way to add the activation key later as a user besides the installation....

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Best regards