Ifrad: ihram for Hajj alone; the general obstruction procedure mentions one offering.
Umrah alone: likewise one offering under the general procedure.
Qiran: two obstruction offerings for a pilgrim combining Hajj and Umrah.
These are offerings to facilitate release following obstruction, not all other categories of sacrificial obligation.
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Bab al-Ihsar — Obstruction, Hady, Release from Ihram and Makeup Rites
Ifrad: ihram for Hajj alone; the general obstruction procedure mentions one offering.
Umrah alone: likewise one offering under the general procedure.
Qiran: two obstruction offerings for a pilgrim combining Hajj and Umrah.
These are offerings to facilitate release following obstruction, not all other categories of sacrificial obligation.