MO: Security Option

What is the purpose of MO: Security Option

profile option ?
MO:Operating Unit Profile Option is used to Link
Responsibility with Operating unit.
MO: Security Profile option is used to enable "MOAC" - Multi-Org Access
Control.
Example Case:Payment manager wants to pay for 2 different OUs.
In 11i:
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* We should have 2 different responsibility. ie.,OU1_payables manager &
OU2_Payables manager.
* These responsibilities has to be assigned to that particular user
(Payment manager)
* That particular user (Payment manager) will login to the
OU1_payables manager responsibility and does the payment.
*Similarly, will login to the OU2_payables manager responsibility and
does the payment.
In R12:
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* Create only one responsibility. say, Payables manager responsibility.
* Assign this responsibility to the user (payment manager)
* Define a 'security profile' in HR in which you will attach the OUs
that needs MOAC (Multi-Org Access Control)
* Now go into the " MO: Security Profile" option and attache that
'security profile' at responsibility level.
* Now the user can access two different OUs and make payments, sitting
at a single responsibility without changing the responsibility.