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To employ the indexer to transform a grouped input tensor into diverse Sequential objects, one can follow the following steps:

1. Group the input tensor into different groups or batches based on some criterion or feature, such as class labels or image features.

2. Use an indexer, such as NumPy's np.random.permutation or PyTorch's torch.randperm, to generate random indices for each group or batch.

3. Apply the generated indices to the corresponding group or batch to shuffle the order of the input tensor.

4. Transform the shuffled tensor into diverse Sequential objects by splitting it into smaller tensors of equal size, or as per the required architecture.

5. Apply any other required transformations or preprocessing steps to the resulting Sequential objects as per the model's specifications.

6. Use the transformed Sequential objects as inputs to the model or any downstream processing steps.