Answer

In Jain terminology, dvitiyopashama means the second subsidential right-belief (dvitīya upaśama samyaktva). Visanyojan / visanyojana is a technical karmic process in which the matter of one karma sub-class is transformed into another sub-class through special thought-activity attainments. ( jainqq.org)

Explanation

According to Jain texts, dvitiyopashama arises in a saint in the 7th spiritual stage, when he is preparing to move toward the 8th stage on the subsidential ladder. At that point, the saint transforms the four error-feeding passions into lesser passions and causes the subsidence of the three forms of darshan-moha: mithyātva, samyaktva-mithyātva, and samyaktva-prakṛti-mithyātva. That state is called the second subsidential right-belief. ( jainqq.org)

How they are linked

The link is direct:

• Visanyojana is the process of changing the karmic condition. ( jainqq.org)
• Dvitiyopashama is the resulting spiritual state that appears when that karmic change has happened. ( jainqq.org)

So, in simple words: visanyojana leads to dvitiyopashama. ( jainqq.org)

Takeaway

Think of visanyojana as the inner karmic transformation, and dvitiyopashama as the purified state that follows from it. It is a subtle but important step in the Jain path of spiritual purification. ( jainqq.org)